Bootstrap Phoenix Application

Set up a new Phoenix application with comprehensive code quality, testing, and development tooling including:

• Phoenix 1.8+ with LiveView
• PostgreSQL with binary_id
• Credo, ExDNA, ExSlop, Doctor, Dialyxir, and Sobelow for code quality
• PgFlow for background jobs and workflows (https://github.com/agoodway/pgflow)
• Req for HTTP (never HTTPoison/Tesla)
• Tidewave for AI agent integration
• Dotenvy for environment management
• Sentry error tracking
• Comprehensive quality check aliases

Phase 0: Detect Existing Phoenix App

Before creating a new application, check if a Phoenix app already exists:

0.1 Detection Steps